MakeFile实例

[root@server1 ~]# cat Makefile    

# To build modules outside of the kernel tree, we run "make"
# in the kernel source tree; the Makefile these then includes this
# Makefile once again.
# This conditional selects whether we are being included from the
# kernel Makefile or not.
ifeq ($(KERNELRELEASE),)

        # Assume the source tree is where the running kernel was built
        # You should set KERNELDIR in the environment if it's elsewhere
        KERNELDIR ?= /lib/modules/$(shell uname -r)/build
        # The current directory is passed to sub-makes as argument
        PWD := $(shell pwd)

modules:
                $(MAKE) -C $(KERNELDIR) M=$(PWD) modules

modules_install:
                $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install

clean:
                rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions

.PHONY: modules modules_install clean

else
        # called from kernel build system: just declare what our modules are
        obj-m := send.o receive.o
endif